Derivative, Notional Amounts Settled During Period

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- Definition

Number of Apartment Homes Held for Sale

+ References

No definition available.

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- Definition

Number of Apartment Homes Sold

+ References

No definition available.

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- Definition

Number of Residential Condominium Units Sold

+ References

No definition available.

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- Definition

Number of Residential Condominium Units Under Contract

+ References

No definition available.

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- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

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- Definition

Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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- Definition

The net cash outflow or inflow for a financial contract that meets the hedge criteria as either cash flow hedge, fair value hedge or hedge of net investment in foreign operations.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
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-Section S99
-Paragraph 3
-Subparagraph (SX 210.12-04(a))
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- Definition

Cash received for the sale of real estate that is not part of an investing activity during the current period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3179-108585

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- Definition

Amount of real estate investments, net of accumulated depreciation, which may include the following: (1) land available-for-sale; (2) land available-for-development; (3) investments in building and building improvements; (4) tenant allowances; (5) developments in-process; (6) rental properties; (7) other real estate investments; (8) real estate joint ventures; and (9) unconsolidated real estate and other joint ventures not separately presented.

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- Definition

The cash outflow to repay long-term debt that is not secured by collateral. Excludes repayments of tax exempt unsecured debt.

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- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

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Subsequent Events (Details)	1 Months Ended		12 Months Ended
Subsequent Events (Details)	Feb. 21, 2020 USD ($) home residential_condominium	Jan. 31, 2020 USD ($) home	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Subsequent Event [Line Items]
Real Estate Investments, Net			$ 18,432,989,000	$ 17,730,930,000
Derivative, Notional Amounts Settled During Period			250,000,000
Payments for (Proceeds from) Hedge, Financing Activities			12,309,000	(12,598,000)	$ (391,000)
Repayment of unsecured debt			0	258,579,000	300,000,000
Gain (Loss) on Extinguishment of Debt			(602,000)	(17,492,000)	$ (25,472,000)
Variable rate unsecured credit facility			0	0
Subsequent Event [Member]
Subsequent Event [Line Items]
Derivative, Notional Amounts Settled During Period	$ 350,000,000
Payments for (Proceeds from) Hedge, Financing Activities	$ 20,314,000
Subsequent Event [Member] \| Subsequent Event Dispositions [Member]
Subsequent Event [Line Items]
Number Of Apartment Homes Sold \| home		250
Proceeds from Sale of Real Estate		$ 64,750,000
Number of Residential Condominium Units Under Contract \| residential_condominium	41
Number of Residential Condominiums Sold \| residential_condominium	14
Subsequent Event [Member] \| Avalon Tinton Falls [Member]
Subsequent Event [Line Items]
Number Of Apartment Homes Held For Sale \| home		216
Real Estate Investments, Net		$ 28,285,000
Subsequent Event [Member] \| Avalon Towers [Member]
Subsequent Event [Line Items]
Number Of Apartment Homes Held For Sale \| home	109
Real Estate Investments, Net	$ 22,358,000
Variable rate unsecured credit facility
Subsequent Event [Line Items]
Variable rate unsecured credit facility			$ 0	$ 0
Variable rate unsecured credit facility \| Subsequent Event [Member]
Subsequent Event [Line Items]
Variable rate unsecured credit facility	87,000,000
Unsecured Notes 2.30 Percent [Member] \| Subsequent Event [Member]
Subsequent Event [Line Items]
Debt Instrument, Face Amount	$ 700,000,000
Stated interest rate (as a percent)	2.30%
Unsecured notes \| Notes Payable 3.625 Maturities 2020 [Member]
Subsequent Event [Line Items]
Stated interest rate (as a percent)			3.625%
Unsecured notes \| Notes Payable 3.625 Maturities 2020 [Member] \| Subsequent Event [Member]
Subsequent Event [Line Items]
Stated interest rate (as a percent)	3.625%
Repayment of unsecured debt	$ 400,000,000
Unsecured notes \| Notes Payable Maturities 2021 [Member]
Subsequent Event [Line Items]
Stated interest rate (as a percent)			3.95%
Unsecured notes \| Notes Payable Maturities 2021 [Member] \| Subsequent Event [Member]
Subsequent Event [Line Items]
Stated interest rate (as a percent)	3.95%
Repayment of unsecured debt	$ 250,000,000
Unsecured notes \| Notes Payable 3.625 Maturities 2020 and 2021 [Member] \| Subsequent Event [Member]
Subsequent Event [Line Items]
Gain (Loss) on Extinguishment of Debt	9,300,000
The Park Loggia [Member] \| Subsequent Event [Member] \| Subsequent Event Dispositions [Member]
Subsequent Event [Line Items]
Proceeds from Sale of Real Estate	$ 47,000,000